Home Phone comparison Samsung Galaxy A51 and Xiaomi 15T - Which is better?

Samsung Galaxy A51 vs Xiaomi 15T

41 out 100
Samsung Galaxy A51
VS
82 out 100
Xiaomi 15T
Samsung Galaxy A51
Xiaomi 15T

Compared 2 smartphones : Samsung Galaxy A51 Manufactured in December, 2019, with display 6.5 with chipsetSamsung Exynos 9 Octa 9611, vs Xiaomi 15T, Manufactured in September, 2025 with chipsetMediaTek Dimensity 8400 Ultra. Below are specs, tests, pros and cons for each device

  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery Life
  6. Cameras
  7. Comments (0)

Key Differences

Device key advantages
Reasons to choose Samsung Galaxy A51
  • Lighter design: 172g vs 194g
Reasons to choose Xiaomi 15T
  • Larger display: 6.83in
  • Higher pixel density: 447ppi
  • Higher refresh rate: 120Hz
  • Higher battery capacity: 5500mAh vs 4000mAh
  • Newer Bluetooth version: 6.0 vs 5
  • Infrared port
  • Built-in eSIM

Versions

Available versions and configurations
Memory Options - 4/64 GB
- 4/128 GB
- 6/128 GB
- 8/128 GB
- 8/256 GB		 - 12/256 GB
- 12/512 GB

Review

Key Specs Samsung Galaxy A51 and Xiaomi 15T
Display
Color accuracy, sharpness & brightness
Camera
Main & front camera tests
Performance
App & system performance
Games
3D gaming performance
Battery
Battery life, charging speed & type
Connectivity
Connectivity features
NanoReview Score
Overall score by NanoReview
Adjust each parameter’s importance to find the best match for you.
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Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison
Smartphones:
Samsung Galaxy A51
vs
Xiaomi 15T

Display

Display quality comparison
Type Super AMOLED AMOLED
Size 6.5 in 6.83 in
Resolution 1080x2400 pixels 1280x2772 pixels
Aspect ratio 20:9 19.5:9
Pixel density 405 ppi 447 ppi
Refresh rate 60 Hz 120 Hz
Adaptive refresh rate No Yes
Max brightness 400 nits n/a
HDR support No Yes, Dolby Vision
Touch Sampling Rate n/a 480 Hz
Screen-to-body ratio 87.5 % 89.9 %
Features Always-On Display - DCI-P3
- Always-On Display
- DC dimming
Display test
Peak brightness (auto)
Samsung Galaxy A51
631 nits
Xiaomi 15T
n/a
sRGB gamut98.8 %n/a
PWM (Flicker)242 Hzn/a
Response time25 msn/a
Contrast∞ Infiniten/a
Sources: NotebookCheck [Samsung Galaxy A51]

Design & Build

Design and ergonomics comparison
Height 158.5 mm (6.24 in) 163.2 mm (6.43 in)
Width 73.6 mm (2.9 in) 78 mm (3.07 in)
Thickness 7.9 mm (0.31 in) 7.5 mm (0.3 in)
Weight 172 g (6.07 oz) 194 g (6.84 oz)
Water resistance No IP68
Cooling system n/a Vapor chamber
Back panel Plastic n/a
Frame Plastic Plastic
Colors - White
- Black		 - Black
- Gray
- Rose Gold
Fingerprint sensor Yes In-Display Yes, In-Display
Screen-to-body ratio
Samsung Galaxy A51
87.5 %
Xiaomi 15T
89.9 %

Performance

Testing Samsung Galaxy A51 and Xiaomi 15T In benchmarks
Processor
Chipset Samsung Exynos 9 Octa 9611 MediaTek Dimensity 8400 Ultra
Max Frequency 2300 MHz 3250 MHz
CPU Cores 8 (4 + 4) 8 (1 + 3 + 4)
Architecture - 4/1.7 (Cortex-A53)
- 4/2.3 (Cortex-A73)		 - 4/2.1 (Cortex-A725)
- 3/3 (Cortex-A725)
- 1/3.25 (Cortex-A725)
Process Samsung TSMC
Transistor Size 10 nm 4 nm
Neural Processor Yes MediaTek NPU 880
Graphics Mali-G72 MP3 Mali-G720 MP7
GPU Cores 54 896
GPU Frequency 850 MHz 1300 MHz
FLOPS 113.8 GFLOPS 2329.6 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy A51
512
Xiaomi 15T
1603
Geekbench 6 (Multi-Core)
Samsung Galaxy A51
1556
Xiaomi 15T
6413
Geekbench 6 (Single-Core)5121603
Geekbench 6 (Multi-Core)15566413
Geekbench Compute (GPU)n/a11228
Sources: Geekbench v6 [Xiaomi 15T]
AnTuTu 10
AnTuTu 10
Samsung Galaxy A51
268760
Xiaomi 15T
1872827
CPU83857448609
GPU45166683486
Memory63828396486
UX75909344246
NanoReview Score2687601872827
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy A51
812
Xiaomi 15T
n/a
Max Surface Temp.42.2 °Cn/a
Stability95 %n/a
Graphics Test4 fpsn/a
Graphics Score812n/a
Sources: 3DMark [Samsung Galaxy A51]

Memory

RAM
RAM Size - 4 GB
- 6 GB		 12 GB
Memory Type LPDDR4X LPDDR5X
Memory Frequency 1866 MHz n/a
Channels 2 4
Storage
Storage Capacity- 64 GB
- 128 GB		256 GB
Storage TypeUFS 2.0UFS 4.1
Memory CardMicroSDNo

Software

OS Android 10 (Upgradeable to Android 13) Android 15
OS Size 23 GB n/a
UI Skin One UI 5.1 HyperOS 2.0

Battery

Volume 4000 mAh 5500 mAh
Max Charging Power 15 W 67 W
Battery Type Li-Po Li-Po
Removable No No
Wireless Charging No No
Reverse Charging No No
Fast Charging Yes (40% in 35 min) Yes (50% in 22 min)
Full Charge Time 1:50 h 0:50 h
Battery Life Test
Battery Life
Samsung Galaxy A51
17:53
Xiaomi 15T
n/a
Web Browsing07:15 hn/a
Video Playback11:25 hn/a
Games04:49 hn/a
Standby Mode81 hn/a

Main camera

Matrix 48 MP 50 MP
Photo resolution 8000x6000 pixels 8192x6144 pixels
Zoom Digital Optical, 2x
Flash LED Dual LED
Stabilization Digital Optical
8K Recording No No
4K Recording Yes (Up to 30 fps) Yes (Up to 60 fps)
1080p Recording Yes (Up to 30 fps) Yes (Up to 60 fps)
Slow Motion 960 fps (720p) 240 fps (1080p)
Wide-angle lens 120 ° 120 °
Lenses count Standard: 48 MP
Ultra-wide: 12 MP
Macro: 5 MP
Depth: 5 MP		 Standard: 50 MP
Telephoto: 50 MP
Ultra-wide: 12 MP
Features - Bokeh effect
- Pro mode		 - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix48 MP50 MP
Aperturef/2.0f/1.7
Focal length26 mm23 mm
SensorSony IMX582Omnivision OV50 Light Hunter 800
Sensor size1/21/1.55
Pixel size0.8 μm1 μm
AutofocusPhase autofocusPhase autofocus
StabilizationDigitalOptical
Telephoto
Matrixn/a50 MP
Aperturen/af/1.9
Focal lengthn/a46 mm
Sensorn/aSamsung S5KJN5
Sensor sizen/a1/2.76
Pixel sizen/a0.64 μm
Stabilizationn/aDigital
Ultra-wide lens
Matrix12 MP12 MP
Aperturef/2.2f/2.2
Focal length13 mm15 mm
Sensor sizen/a1/3.06
Pixel size1.12 μm1.12 μm
StabilizationDigitalDigital

Front camera

Matrix 32 MP 32 MP
Photo resolution 6560x4928 pixels n/a
Aperture f/2.2 f/2.2
Focal length 26 mm 21 mm
Sensor Samsung S5KGD1 CMOS
Sensor size 1/2.8 1/3.44
Pixel size 0.8 μm 0.64 μm
Autofocus No No
Stabilization Digital Digital
Video resolution 2160p (4K) at 30 fps 2160p (4K) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 5 (802.11 a/b/g/n/ac) Wi-Fi 6E (802.11 a/b/g/n/ac/ax)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 6.0
Bluetooth features PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP LE
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort n/a No
GPS - GPS
- GLONASS
- Beidou
- Galileo		 - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
NFC* Yes Yes
Infrared Port No Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoYes
Hybrid SlotNoNo
2G BandsGSM 850 / 900 / 1800 / 2100 / 2600GSM 2/3/5/8
3G BandsUMTS 850 / 900 / 1900 / 2100WCDMA B1/2/4/5/8/6/19
LTE Bands*LTE (B850/B900/B1800/B2100/B2600)LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B26/B28/B32/B66/B71)
LTE category12n/a
5G SupportNoYes

Sound

Speakers Mono n/a
3.5 mm Jack Yes No
FM Radio Yes No
Dolby Atmos Yes Yes
Speaker Test
Max Volume
Samsung Galaxy A51
81.7 dB
Xiaomi 15T
n/a

Other

Class Mid-range Mid-range
Announced December, 2019 yr September, 2025 yr
Release Date December, 2019 yr September, 2025 yr
Launch Price ($) 399 n/a
MSRP ($) n/a 650
Sensors - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included n/a No
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Xiaomi 15T the clear winner in this comparison.

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